Cryogenic properties fatigue

Tire compounds, aged and fatigued properties of, 21 811-812 Tire cord, 2 643-644 Tire-derived fuel (TDF), 21 463—464 industrial uses for, 21 465 use in electrical generation, 21 465 use in pulp and paper mills, 21 464 Tire pulverizing, cryogenic, 21 469-470 Tire retreading, 21 479 Tires... 

The fatigue crack growth and fracture toughness properties of AMg6 and 5083-0 are essentially the same at room temperature, but 5083-0 exhibits better properties at cryogenic temperatures. 

More extensive use of aluminum alloys for service at cryogenic temperatures has resulted in a need for more detailed information about their behavior in both the plain and welded conditions at these temperatures. For example, the moduli, fatigue strengths and those properties related to toughness, such as notch sensitivity and tear resistance, are of prime importance. These properties have been studied at the Alcoa Research Laboratories and a brief review of some of the more important findings follows. 

Comment by E. D. Verink, Aluminum Company of America Supplementary information on several A1 alloys is given in the booklet. Cryogenic Applications of Alcoa Aluminum. These include 5083, 5086, 5454, 5456, 5356, 6061, and 300 S. Properties reported include TS, YS, fatigue, modulus, shear strength, etc., at room and liquid-nitrogen temperatures. 

The high specific strength or stiffness, thermal and electrical insulation capabilities, and the fatigue-endurance limits of fiber composites are the chief reasons for their cryogenic applications. The polymeric matrix plays an important part, and for several properties, constitutes the limiting factor. 

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